Specifications
- Connection TypeWirelessWireless ConnectivityBluetoothTrue WirelessYesMaximum Wireless Range59 feetWater ResistantYesBuilt-In MicrophoneYes
- Key Specs
- Connection Type: Wireless
- Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- True Wireless: true (These headphones not only lack wires between the device and headphones, they also lack wires between the headphones themselves. (true wireless is really only possible with in-ear headphones))
- Maximum Wireless Range: 59 feet
- Water Resistant: true (Resists some degree of water penetration.)
- Built-In Microphone: true
- Carrying Case: true
- Microphone Features: Noise cancelling, Voice Activated
- Headphone Fit: In-Ear
- Battery Life: 28 hours (Battery life will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. As with all batteries, the maximum capacity of this battery will decrease with time and usage.)
- Battery Charge Time: 2 hours (Battery charge time will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. Charging time will likely decrease with time and usage of the battery.)
- Ear Tip Sizes Included: Small, Medium, Large
- General
- Brand: Tronsmart
- Model Number: Sounfii R4
- Product Name: Sounfii R4 True Wireless In-Ear Earbuds, 12mm Drivers with Big Bass, 4 Mics ENC Clear Call, Smart Touch Control
- Color: Black
- Ear Tip Sizes Included: Small, Medium, Large
- Audio
- Sound Isolating: false
- Environmental Noise Control: true (A technology that automatically or manually adjusts, or eliminates, ambient background sound to allow conversational voices to be heard clearer.)
- Minimum Frequency Response: 20 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 20 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Impedance: 16 ohms (Describes the resistance of an electric signal throughout the system. Devices with low impedance require less power to deliver optimal signals but are more at risk for damage from overloading. Higher impedance requires more power but is more protected from overload damage.)
- Driver Size: 12 millimeters
- Connectivity
- Connection Type: Wireless
- Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- True Wireless: true (These headphones not only lack wires between the device and headphones, they also lack wires between the headphones themselves. (true wireless is really only possible with in-ear headphones))
- Bluetooth Version: 5.3 (The Bluetooth specification formalized by the Bluetooth Special Interest Group. All versions of the Bluetooth standard are backwards compatible with previous versions.)
- Maximum Wireless Range: 59 feet
- Features
- Water Resistant: true (Resists some degree of water penetration.)
- Waterproof: true (Designed or treated to be impervious to water in certain situations. Products are tested under controlled laboratory conditions and then assigned an Ingress Protection (IP) rating to denote the degree of protection from water ingress. The level of protection may decrease over time with natural wear of the product.)
- Built-In Microphone: true
- Carrying Case: true
- Microphone Features: Noise cancelling, Voice Activated
- Controls: Call, Track selection, Voice assistant, Volume
- Bone Conducting Technology: false
- Design
- Headphone Fit: In-Ear
- Style: Studio
- Power
- Rechargeable: true
- Battery Life: 28 hours (Battery life will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. As with all batteries, the maximum capacity of this battery will decrease with time and usage.)
- Battery Charge Time: 2 hours (Battery charge time will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. Charging time will likely decrease with time and usage of the battery.)
- Battery Capacity: 400 milliampere hours (The amount of energy stored in the battery.)
- Charging Accessory Included: Case, Cable
- Battery Life Provided by Charging Case: 28 hours
- Fast Charging: 10min=2hrs (Quick charge technologies typically use higher voltages and/or charging interfaces to fill a device's battery capacity faster than standard charging speeds.)
- Charging Interface(s): USB-C (The connection for transmitting power to charge the device.)
- On/Off Switch: Automatic
- Dimensions
- Product Height: 2 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 2.48 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Length: 1.1 inches (The out of box length of the item. Length is measured as the longest dimension of the item.)
- Product Weight: 0.1 pounds (The out of box weight of the item.)
- Warranty
- Warranty - Parts: 1 Year Limited
- Warranty - Labor: 1 Year Limited
- Other
- UPC: 6975606873256
Tronsmart Sounfii R4 Earphones are made for music and optimized for use in any environment - working from home, at the office, or on the go. Designed with a custom acoustic platform, Sounfii R4 Earphones are engineered to deliver powerful, balanced sound in a compact, in-ear form factor. These earbuds have 4-mic call technology for clear virtual meetings or mobile phone calls, ENC for better focus, and are comfortable for all-day use. Each earbud has up to 7 hours of listening time with two additional charges provided by its pocket-sized charging case to give you up to 28 hours of combined playback.
- 4 Mics ENC Noise Cancellation: ENC noise reduction can provide a high-resolution call experience, accurately capture your voice, and reduce background noise. Featured with quad-mic call noise cancellation, Sounfii R4 offers exceptional call clarity even in bustling environments.
- Stereo Bass Sound: Bluetooth earbuds are equipped with 12mm composite titanium drivers to deliver deep, rich bass and precise audio clarity, allowing you to enjoy music, movies, and calls with an enhanced overall experience.
- Premium design: Inspired by the mysteries of space, the design of Sounfii R4 combines premium materials with an ergonomic form factor to ensure a comfortable listen for every user.
- Perfect fit: The noise-canceling Bluetooth headphones adopt an ergonomic semi-in-ear design, which is lightweight and compact, dispersing ear canal pressure while keeping it firm, comfortable to wear for a long time, and will not fall off during exercise. The wireless headphones feature IPX4 waterproof function, sweat-proof, suitable for cycling, running, gaming, travel, exercise, yoga and business.
- Charging case: A quick and convenient charging case allows you to boost your earbud’s battery as and when you need to. Simply charge your case, to deliver 28 hours of high-quality sound on the go.
- Smart Touch Control: Access all functions effortlessly, activating voice assistants via simple touch.
- Bluetooth 5.3 and One-step Automatic Pairing: Our wireless earbuds have advanced Bluetooth 5.3 technology, faster transmission speed, stronger anti-interference, longer Bluetooth range, stable connection and low latency, allowing you to use it easily at home, in the office and during exercise. After the wireless Bluetooth headphones are connected for the first time, just open the charging box and the earbuds will automatically connect to your phone.
Whats Included
- 1 x Sounfii R4 ENC Earphones
- 2 x Extra Pairs of Eartips
- 1 x Charging Cable
- 1 x Warranty Card
- 1 x User Manual
Q: Are these earbuds good for making calls?
A: Yes, these earbuds are equipped with 4 microphones and ENC noise cancellation for clear calls, even in noisy environments.
Q: How do I control the functions of the earbuds?
A: The earbuds feature smart touch controls, allowing you to activate voice assistants, manage calls, and control playback with a simple touch.
Q: Are the Tronsmart Sounfii R4 Earphones water-resistant?
A: Yes, the earbuds are IPX4 water-resistant, making them suitable for workouts and use in light rain.
Q: What is the maximum range I can have between my device and the earbuds?
A: The maximum wireless range is 59 feet.
Q: What is the driver size in these Tronsmart earbuds?
A: The Tronsmart Sounfii R4 Earphones have 12mm composite titanium drivers.
Q: How do the Tronsmart Sounfii R4 Earphones connect to my device?
A: The Sounfii R4 Earphones use Bluetooth 5.3 technology for a fast and stable connection.
Q: What is the battery life of these Tronsmart earbuds?
A: These earbuds offer up to 28 hours of total playtime - 7 hours on a single charge and an additional 21 hours from the charging case.
Q: Hello, does the charging case support wireless charging?
A: undefined
Tronsmart - Sounfii R4 True Wireless In-Ear Earbuds, 12mm Drivers with Big Bass, 4 Mics ENC Clear Call, Smart Touch Control - Black
Color
Black
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| Pros for Tronsmart - Sounfii R4 True Wireless In-Ear Earbuds, 12mm Drivers with Big Bass, 4 Mics ENC Clear Call, Smart Touch Control - Black | |||
|---|---|---|---|
| Good sound quality, Bass, Inexpensive | Sound quality, Battery life, Price, Comfort, Wireless | Sound quality, Comfort, Battery life, Fit, Price | Comfort, Battery life, Fit, Price, Noise cancellation |
| Cons for Tronsmart - Sounfii R4 True Wireless In-Ear Earbuds, 12mm Drivers with Big Bass, 4 Mics ENC Clear Call, Smart Touch Control - Black | |||
| Battery life, Case design, Fit, Stopped working | Tap function | Bass, Volume, Connectivity, Charging, Touch controls | Bass, Ear tips, Expensive, Customer service, Microphone |
Specs
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Reviews
Customers are saying
Customers love the sound quality of these wireless earbuds, describing it as "great" and "riveting." They also appreciate the long battery life, with one customer saying they hold a charge for "an extremely long time."
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products or points for an honest, helpful review.
- Rated 4 out of 5 stars
Good Headphones
These are good headphones. They are not a set of $100 plus headphones but they are good. They connect flawlessly and the basic functions work as they are supposed to. The sound quality is good. They are on little on the bass-heavy side, so it makes them fun to listen to. They do not have a flat sound. These still have a good amount of mids and highs to sound good. They also get pretty loud. If you buy these, make sure you try all the ear tips to find the one that fits your ear but also sets the headphones correctly. If they don't sound good, then you don't have them in your ear correctly. The case for these is fine. One person wrote that it is hard to open but that is not true. pull the case lid open from the top -not at the seam- and it folds open very easy. Now, I will say getting the headphones out of the case is a little cumbersome but only a little. for $15 to 20 these are a good value.
Posted by RonR
- Rated 2 out of 5 stars
Pass on these.
Case is poorly design the lid, when open impedes inserting or removing the ear buds. Also, it is so smooth it is hard to open, nor is there any lip or something to get a grasp on the lid. The sound is ok, These are not 28 hour play time, they are only 7 hour as the manual says but 28 hours with case and volume at 50%.
Posted by GeorgeD
- Rated 5 out of 5 stars
Tronsmart Ear buds
Riveting. Very inexpensive and great quality of sound.
Posted by Carkar